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Simulation of crankshaft torsional vibration by flexible body dynamics.

Number: pap. 1163

Author(s) : CHENG J., LIN Z., YU B., et al.

Summary

The crankshaft accidents due to torsional vibration become severe with increasing number of rows of reciprocating compressors. In order to calculate more accurately of the crankshaft torsional vibration, a new calculation method based on flexible multi-body dynamics theory was presented in this paper. The model establishment process was introduced and the torsional vibration of a 6 rows crankshaft before and after transformation was simulated by ADAMS software. The results showed that before transformation the natural frequency of the crankshaft was closed to the excitation frequency, thus caused the vibration amplitude of crankshaft too large. Actual stress of the piston pin of the first and the second row increased rapidly. After transformation, the frequency of the crankshaft became away from the excitation frequency, and the amplitude of the crankshaft torsional vibration reduced substantially, then the crankshaft accident disappeared.

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Pages: 6 p.

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Details

  • Original title: Simulation of crankshaft torsional vibration by flexible body dynamics.
  • Record ID : 30014031
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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